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FFI: Ensure library is loaded before de-serializing FFI types.

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Reported by ImagicTheCat.
This commit is contained in:
Mike Pall 2022-01-15 18:32:34 +01:00
parent d5a237eae0
commit c21c6cb417
2 changed files with 5 additions and 0 deletions
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4
doc/ext_buffer.html
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@ -448,6 +448,10 @@ encoded data. The stand-alone function throws when there's left-over
data after decoding a single top-level object. The buffer method leaves data after decoding a single top-level object. The buffer method leaves
any left-over data in the buffer. any left-over data in the buffer.
</p> </p>
<p>
Attempting to de-serialize an FFI type will throw an error, if the FFI
library is not built-in or has not been loaded, yet.
</p>
<h3 id="serialize_options">Serialization Options</h3> <h3 id="serialize_options">Serialization Options</h3>
<p> <p>

1
src/lj_serialize.c
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@ -417,6 +417,7 @@ static char *serialize_get(char *r, SBufExt *sbx, TValue *o)
uint32_t sz = tp == SER_TAG_COMPLEX ? 16 : 8; uint32_t sz = tp == SER_TAG_COMPLEX ? 16 : 8;
GCcdata *cd; GCcdata *cd;
if (LJ_UNLIKELY(r + sz > w)) goto eob; if (LJ_UNLIKELY(r + sz > w)) goto eob;
if (LJ_UNLIKELY(!ctype_ctsG(G(sbufL(sbx))))) goto badtag;
cd = lj_cdata_new_(sbufL(sbx), cd = lj_cdata_new_(sbufL(sbx),
tp == SER_TAG_INT64 ? CTID_INT64 : tp == SER_TAG_INT64 ? CTID_INT64 :
tp == SER_TAG_UINT64 ? CTID_UINT64 : CTID_COMPLEX_DOUBLE, tp == SER_TAG_UINT64 ? CTID_UINT64 : CTID_COMPLEX_DOUBLE,